Physics for IGCSE & O level - Magnets And Currents (Section 1 - No. 7)
What causes the coil in an electric motor to turn?
The connection to the battery.
The interaction of the current in the coil with the magnetic field.
The commutator.
The brushes.
Explication
The coil turns due to the interaction between the current in the coil and the magnetic field generated by the magnets.